package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.annotation.AutoFill;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.entity.User;
import com.sky.enumeration.OperationType;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.BaseException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.PathVariable;

import java.time.LocalDateTime;
import java.util.List;

@Slf4j
@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        //对前端传进来的明文,进行MD5加密
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    @Override
    public void save(EmployeeDTO employeeDTO) {
        //employeeDTO-->转为employee
        Employee employee = new Employee();
        //对象的属性拷贝.
        //只有一部分,剩下的自己设置
        BeanUtils.copyProperties(employeeDTO, employee);
        //设置账号的状态,默认正常情况 1.表示正常 0.表示锁定
        //public static final Integer ENABLE = 1;
        employee.setStatus(StatusConstant.ENABLE);
        //设置密码,默认密码:123456
        //public static final String DEFAULT_PASSWORD = "123456";
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        //设置当前记录的时间和修改时间
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        //设置当前记录创建人id和修改人id
        employee.setCreateUser(BaseContext.getCurrentId());
        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.insert(employee);
    }

    /**
     * 员工分页查询
     * @param employeePageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQurey(EmployeePageQueryDTO employeePageQueryDTO) {
        //1.设置分页参数(页码,每页多少数).
        PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());
        //2.执行查询
        Page<Employee> page = employeeMapper.pageQuery(employeePageQueryDTO);
        long total = page.getTotal();
        List<Employee> records = page.getResult();
        return new PageResult(total, records);
    }

    /**
     * 启用禁用员工账号
     * @param status 员工状态-1启用,0禁用
     * @param id     员工id
     */
    @Override
    public void startOrStop(Integer status, long id) {
//        Employee employee=new Employee();
//        employee.setId(id);
//        employee.setStatus(status);
        Employee employee = Employee.builder()
                .id(id)
                .status(status)
                .build();
        employeeMapper.update(employee);
    }

    /**
     * 根据路径参数查询员工信息
     * @param id
     * @return
     */
    @Override
    public Employee getEmployeeById(@PathVariable Integer id) {
        Employee employee = employeeMapper.getById(id);
        employee.setPassword("*****");
        return employee;
    }

    /**
     * 更新员工信息
     * @param employeeDTO
     * @return
     */
    @Override
    public void updateEmployee(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        //对象的属性拷贝
        BeanUtils.copyProperties(employeeDTO, employee);
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.update(employee);
    }


    /**
     * 更新员工密码信息
     * @param passwordEditDTO
     * @return
     */
    @Override
    @AutoFill(OperationType.UPDATE)
    public void updatePassword(PasswordEditDTO passwordEditDTO) {
        // 1. 根据 empId 查询员工得到旧密码
        Employee employee = employeeMapper.getByempId(passwordEditDTO.getEmpId());
        // 2. 校验旧密码
            //对前端传进来的明文,进行MD5加密
      String password = DigestUtils.md5DigestAsHex(passwordEditDTO.getOldPassword().getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }
        // 3. 设置新密码并更新
        employee.setPassword(DigestUtils.md5DigestAsHex(passwordEditDTO.getNewPassword().getBytes()));
        employeeMapper.update(employee);
    }
}
